Abstract: Curable acrylate-epoxy resin blends comprising an epoxy resin, a crosslinking accelerator, a latent hardener, an acrylate monomer component, and a free radical initiator are provided. Such curable acrylate-epoxy resin blends have a low viscosity and a long pot life. Such curable acrylate-epoxy resin blends are mixed with a fiber component and optionally fillers and then heated to polymerize the acrylate monomer component to form semi-solid molding compounds having a long shelf life. Such molding compounds are molded and further heated to crosslink the epoxy resin to form shaped articles of substantially rigid composite materials.

Abstract: A multistage filament winding process for manufacturing a composite article using a dual chemistry formulation including the steps of (a) providing a dual chemistry formulation containing components to effectuate dual cure of the formulation; (b) winding fibers on a liner or on a mandrel; (c) impregnating the wound fibers of step (b) with the dual chemistry formulation; (d) activating a first reaction (A) by UV or thermal-free radical initiation sufficient to form first macroscopic gels and to allow the first macroscopic gels to phase separate from the remaining substantially unreacted components in the formulation; (e) optionally, activating a second reaction by heating through IR lamps or other heating apparatus and controlling the second reaction sufficient to form second macroscopic gels subsequent to the formation of the first macroscopic gels which have gelled and phase separated in the formulation; (f) repeating steps (a)-(d) until a composite article having a predetermined thickness is formed; and (g)

Abstract: The invention relates to a process comprising: (a) preparing a curable epoxy-anhydride thermoset composition; and (b) applying said curable epoxy-anhydride thermoset composition in a cured-in-place pipe rehabilitation process is disclosed. The cured-in-place pipe application utilized can generally be the ‘Inversion Installation Method,’ or the ‘Pull-in Installation Method’. The invention also relates to a cured-in-place pipe that is prepared by this process.

Abstract: A dual cure system including at least two different and separate types of chemical reactions occurring as the process of the present invention proceeds including, for example, the following two reactions: (1) free radical polymerization of methacrylated or acrylated polyol; and (2) an epoxy-curing agent reaction. The dual cure system of the present invention advantageously provides a first cure reaction of methacrylated or acrylated polyol followed by a second epoxy-curing agent thermoset reaction to form a cured thermoset exhibiting an elongation property of greater than about 5%.

Abstract: A hardener composition comprising: a) an epoxy-amine adduct of i) a novolac epoxy resin; and ii) a first amine and b) a modifier wherein the hardener has a viscosity in the range of from 50 to 20,000 mPa·s and wherein a cured epoxy thermoset comprising the hardener exhibits no more than 1% weight loss or gain after immersion in concentrated mineral acid for 7 days at a temperature in the range of from 25° C. to 130° C., is disclosed. The hardener composition can be used with an epoxy resin to form a curable composition.

Abstract: A process for producing a dispersion comprising: dispersing a) a core shell rubber into b) a hardener component selected from the group consisting of anhydrides, amines, phenol novolacs, and mixtures thereof in a dispersion zone under dispersion conditions wherein said dispersion zone does not contain a solvent and wherein said dispersion conditions comprise a dispersion temperature of 40° C. to 100° C., a Reynolds Number greater than 10, and a dispersion time of from 30 minutes to 80 minutes is disclosed.

Abstract: The invention relates to a process comprising: (a) preparing a curable epoxy-anhydride thermoset composition; and (b) applying said curable epoxy-anhydride thermoset composition in a cured-in-place pipe rehabilitation process is disclosed. The cured-in-place pipe application utilized can generally be the ‘Inversion Installation Method,’ or the ‘Pull-in Installation Method’. The invention also relates to a cured-in-place pipe that is prepared by this process.